Another friend posted this on his blog and the design features on this just seemed like something perfect to share with this class. A bag that can be used to shop grains and such that then can be used as a water filtration system - not to mention that it can be worn like a backpack to and from the water source. Admittedly, I don't understand the purification technology, but this sounds really amazing.
http://inhabitat.com/2010/09/16/life-sack-solves-drinking-water-issues-for-the-third-world/
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